From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from elaine.keithp.com (home.keithp.com [63.227.221.253]) by sourceware.org (Postfix) with ESMTPS id B0EC6384F02A for ; Fri, 26 Aug 2022 20:37:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B0EC6384F02A Authentication-Results: sourceware.org; dmarc=pass (p=quarantine dis=none) header.from=keithp.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=keithp.com Received: from localhost (localhost [127.0.0.1]) by elaine.keithp.com (Postfix) with ESMTP id 7EBBF3F30341; Fri, 26 Aug 2022 13:37:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=keithp.com; s=mail; t=1661546260; bh=OjGs0NQIpr6cBDTl6X2XyN5NjnA6vCcThQrawBooChI=; h=From:To:Subject:In-Reply-To:References:Date:From; b=CO6fTTA6AA7FzjtKhC5acCFlceH8WC33Bs+WKTwBu0HZBkJXpIzLPc4soKTBa+rZY +fFVup2W+vQ+WtqKmKMG6axnM6rtj8Lz2QwHP3MSrEtskGEf7/ysnS+5qlSqrm0OUU ouN4uJCjnDsbsFT3sFT97UC3EUCSmVQfsQ13xlrDhBAaj8fX56nsu8KiU1dPjJzExj wrH0t0qU5SFwsDs1PTBYgDtmLLhRYvXFr57XC1aQovQp+yZ+7u1AiaYUE+j4RoTCau 95v3mbGZP83t4+7+86JQUcqQVwODEW6ZRrNyBzluRs88FY9McvbdISNkpqcKDeFUnt zJno6sucmNLRA== X-Virus-Scanned: Debian amavisd-new at keithp.com Received: from elaine.keithp.com ([127.0.0.1]) by localhost (elaine.keithp.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 5t9RtqpqelXX; Fri, 26 Aug 2022 13:37:40 -0700 (PDT) Received: from keithp.com (koto.keithp.com [192.168.11.2]) by elaine.keithp.com (Postfix) with ESMTPSA id 14AAC3F3033F; Fri, 26 Aug 2022 13:37:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=keithp.com; s=mail; t=1661546260; bh=OjGs0NQIpr6cBDTl6X2XyN5NjnA6vCcThQrawBooChI=; h=From:To:Subject:In-Reply-To:References:Date:From; b=CO6fTTA6AA7FzjtKhC5acCFlceH8WC33Bs+WKTwBu0HZBkJXpIzLPc4soKTBa+rZY +fFVup2W+vQ+WtqKmKMG6axnM6rtj8Lz2QwHP3MSrEtskGEf7/ysnS+5qlSqrm0OUU ouN4uJCjnDsbsFT3sFT97UC3EUCSmVQfsQ13xlrDhBAaj8fX56nsu8KiU1dPjJzExj wrH0t0qU5SFwsDs1PTBYgDtmLLhRYvXFr57XC1aQovQp+yZ+7u1AiaYUE+j4RoTCau 95v3mbGZP83t4+7+86JQUcqQVwODEW6ZRrNyBzluRs88FY9McvbdISNkpqcKDeFUnt zJno6sucmNLRA== Received: by keithp.com (Postfix, from userid 1000) id 2284A1E601CB; Fri, 26 Aug 2022 13:37:39 -0700 (PDT) From: Keith Packard To: Tommy Murphy , "crossgcc@sourceware.org" Subject: Re: Can CT-NG build a RISC-V picolibc toolchain? In-Reply-To: References: Date: Fri, 26 Aug 2022 13:37:38 -0700 Message-ID: <87edx291wt.fsf@keithp.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Tommy Murphy via crossgcc writes: > Can I use CT-NG to build a RISC-V bare metal toolchain that uses > picolibc as the standard library? Can I build one that bundles newlib, > newlib-nano and picolibc which can be switched between using the > relevant specs files as can be done for Arm? Yup. The "trick" is that newlib-nano and picolibc are 'companion' libraries, so you won't find them in the obvious place in the menus. That was the easy way to integrate all three C libraries into the existing ct-ng code. I just tried building a riscv toolchain with ct-ng master and it worked fine. I started with riscv32-unknown-elf, added multilib, newlib-nano and picolibc. I did have to explicitly disable default-pie. =2D-=20 =2Dkeith --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEw4O3eCVWE9/bQJ2R2yIaaQAAABEFAmMJLxIACgkQ2yIaaQAA ABGM1w//W790tyHXWRXboVOcKZpuoH+9qFJlKk1oeeVS4L2walK1QWzIVqXD5S4r ppa5bo6lNL3ClaCxzfXLViHkjyoLhJ0AlYdbqHPeBMhvk98cxq3wtJOL9gQNHswv KpuAKYN4MdZQc/3hogjZmIRcaIJbwZwNvo9GdevBBjEoVGmMP4C72pjB2Pno2xnE rYg/fFd/8BMtJRAAtEW+nNB6mIH7pKIQoviJySlUdJGO3rcqJCbfnBVnXJsSoBvh HB+rS9utHcKBi7A+nE8eR1o35inhJNcryHyX4mDtvVhtcVLvWgB6+F+4l7AaRkN7 FFa1arOAFWDGmy/8Zg1ejRKQ4nXS/zY9+/Ads6Ah6H7iBFPTlpOkRx0VJEcrDLNm yPHDAlqPhdrcqO/Bj7eaZRuOpoECEAp1FMUANac8afMCDQXzZ8KOQcJLe0Rx77qK mqqjIYZwjMLpx6RY7Pz7CDVDP/WKxLEdZerIkFFeRt5Duf21RglTYWLy8RGFx6Pn mKk+4dOjG1pnM1lLwJlhviUDp5h5rjXfOmhddxwZ46uikLvR7x6HIaF1Fr2ts3gx l8+mdPYhzyNgA01HfMhgs0l9RWNWjwqcjdXJFeGqWhIg7GWNvs+4i9RJkBHolvwc ePBdk2mvE5Cft5HCdloh07G+uG32B1brCzBdfwOJcdsbo56c8hg= =nI6R -----END PGP SIGNATURE----- --=-=-=--